Improvement in picture-knobs



anni dimite.

HENRY c.` LUTHER, or PROVIDENCE, nnoDE ISLAND, ANncELIus E.

RICHARDS, OF NORTH AT'ILlilBOROUGrIl,MASSACHUSETTS.`

.Letters Patent No. 104,609, dated June 21, 1870.

IMPROVEMENT IN PICTURE-Knaus.

`flllie Schedule referred to in these Lettere Patent and making part of the same.

To all whom it may conce-rn V y.

Be .it known that re-HENRY'G. Lu'rnnn, `of the city and county of .Frei/"idonee, in the Stateof Rhode Island, and `(JELlus E. RICHARDS, of North Attleborongh, in the county of Bristol and State oi Massachusetts, have invented a new and useful Improved* 1"'cturc-Knob;` and wcldo hereby declare that the following specification, taken inconnection with the drawing making a part of the same, is a full, clear, and cxact description thereof. y

l Figure 1 exhibits our improved knob inl apcrspective-view. y v Figure 2 is a sectional View through the axis of the same. a l

In the" accompanying drawing- A represents the knob, which may be of wood or `any othervsuitable material, and

13, a common wood-screw, which is inserted through a hole in the axis of the knob, and is designed to enter the wall. f

Thefront endof the hole for the screw should be countcrsunk, so as to allow the head oi' the screw to cnterthe body part of thc knob, and not project beyond its face.

.In the end of the knob,.and concentric with the hole for the screw, `an annular groove, a, is cut, which may p well be, as shown in the drawing, an extension inward of `the groove which separates the ornamental mold- I ing C from the central portion of the knob.

, 'i is` a cap for concealing theheadof the screws.

The face of it is intended to be ornamentalinchar acter, and consists of glass, or other cheapmaterial capable of ornamentation, mounted in a setting of thin sheet metal, c. V .'lhcmctallicportion is struck up by dies, cup-form, in the way practiced in the jewelers art, with a rim to hold the central ornamental illing,`which may contain a monogram, an inlaid` letter, or other preferred device.

The cap is to be inserted in the head of the knob,

where it is held by the friction of the sides of the metallic cup against'the sides 'of the groove a.

The knob is to be secured to the wall in the usual way, and the capcan be readily inserted by a slight pressure. It can be removed easily by thc aid of the point of a knife-blade, whenever desired to change the knob.

NVhat we claim as our invention, and desire to secure by Letters Patent, isy rfhe improvement in the construction of picture-` nails, which consists in the combination of thc ornamental cap F with the head A of the nail, when the flanged rim of the former is inserted in the groove u of the latter, substantially as herein described.

z H. C. LUTHER.

C. E. RICHARDS.

Wi tucsscs:

EDWARD C. AMES, ORYILLE PECKHAM. 

